A police car with wailing sirens (might also be an emergency or firefighters vehicle) driving by. At the same time, a car alarm of a nearby parked car starts blaring. Recorded in Rome, Italy. Stereo. Ambience,

Just off the beaten path, a still busy corner in downtown Chicago. Trucks pass closely by, as do people, and off in the distance sirens can be heard between the rows of buildings making a canyon-like effect. A busy but authentic big city ambiance. Ambience,